English

Curves intersecting exactly once and their dual cube complexes

Geometric Topology 2015-02-03 v1

Abstract

Let SgS_g denote the closed orientable surface of genus gg. We construct exponentially many mapping class group orbits of collections of 2g+12g+1 simple closed curves on SgS_g which pairwise intersect exactly once, extending a result of the first author and further answering a question of Malestein-Rivin-Theran. To distinguish such collections up to the action of the mapping class group, we analyze their dual cube complexes in the sense of Sageev. In particular, we show that for any even kk between g/2\lfloor g/2 \rfloor and gg, there exists such collections whose dual cube complexes have dimension kk, and we prove a simplifying structural theorem for any cube complex dual to a collection of curves on a surface pairwise intersecting at most once.

Keywords

Cite

@article{arxiv.1502.00311,
  title  = {Curves intersecting exactly once and their dual cube complexes},
  author = {Tarik Aougab and Jonah Gaster},
  journal= {arXiv preprint arXiv:1502.00311},
  year   = {2015}
}

Comments

35 pages, 29 figures

R2 v1 2026-06-22T08:18:21.443Z